PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-02:28:10
G02     68.8           24.7                8.6 +/-    0.86      17.0 +/-    0.86  0.120 / 0.120
G05     47.5           49.4                7.6 +/-    0.61       9.7 +/-    0.61  0.140 / 0.090
G12     183.8          23.4                9.4 +/-    1.87      19.0 +/-    1.87  0.070 / 0.120
G13     117.7          22.3               10.5 +/-    1.28      21.9 +/-    1.28  0.070 / 0.110
G15     156.5          22.1                9.4 +/-    3.53      19.6 +/-    3.53  0.080 / 0.220
G25     222.4          43.1                9.9 +/-    1.61      13.8 +/-    1.61  0.090 / 0.220
G29     342.3          68.9                9.8 +/-    0.81      10.5 +/-    0.81  0.040 / 0.040